In small saucepan, sprinkle gelatine over cold water; let stand 1 minute. Stir over low heat until gelatine is dissolved. In blender or food processor, process peanut butter, milk, sugar, and eggs. While processing, gradually add gelatine mixture until blended. Pour into crust; chill until almost set. In small saucepan, bring cream to the boiling point. Remove from heat; stir in chocolate chips until melted. Let stand 3 minutes. Slowly pour over pie and spread to edges; chill until firm. Garnish with white or dark chocolate curls.